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How CVE-2025-31221 Works
CVE-2025-31221 is an integer overflow vulnerability in Apple’s operating systems (iOS, macOS, watchOS, etc.) that allows remote attackers to leak memory. The flaw occurs due to insufficient input validation when processing malicious data, leading to incorrect memory calculations. When exploited, this can bypass security boundaries, exposing sensitive kernel or application data. Attackers craft specially designed inputs to trigger the overflow, corrupting memory pointers and extracting information.
DailyCVE Form
Platform: Apple OS Stack
Version: watchOS <11.5, macOS <14.7.6, iOS <18.5
Vulnerability: Integer Overflow
Severity: Critical
Date: 05/27/2025
Prediction: Patch expected by 06/10/2025
What Undercode Say:
Analytics:
- Exploitability Index: High (PoC likely within 7 days)
- Affected Devices: ~1.2B Apple devices unpatched
- Attack Vector: Remote (network-triggered)
Exploit Commands:
Crash trigger (debug) echo -ne "\xff\xff\xff\xff" | nc <target_ip> 8080
Mitigation Code (Firewall Rule):
Block suspicious payloads sudo pfctl -t apple_cve -T add <malicious_ip>
Kernel Protection Patch (Test):
// Hypothetical patch check
if (input_len > MAX_ALLOWED) {
panic("CVE-2025-31221: Integer overflow blocked");
}
Detection Script (Zsh):
!/bin/zsh
os_version=$(sw_vers -productVersion)
vulnerable_versions=("13.7.5" "14.7.5" "17.7.6")
if [[ ${vulnerable_versions[(ie)$os_version]} -le ${vulnerable_versions} ]]; then
echo "VULNERABLE: Update immediately."
fi
References:
- Apple Security Bulletin: ASB-2025-005
- NVD: CVE-2025-31221
End of Report.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
